27 
The numbers which have been captured of the crabs marked in 
the autumn of 1905 are: — 19 out of 100 at Beadnell (and 3 of these 
were recaptured twice) ; 17 out of 100 marked at Craster ; 5 out of 
79 liberated at Newbiggin. Three of 60 marked at Sea Houses 
were recorded in the last report, and no others have since been 
obtained. Beyond the 2 which were reported as having been caught 
and returned to the water, no recaptures of the 100 liberated at 
Hauxley have been reported. 
The two first mentioned in the above table are interesting as 
indicating that the males may remain in the same region for 
several years, and they add to the facts previously recorded with 
reference to the periods of casting. The latter of the two had only 
the wire remaining, the label having been lost, but Mr. Douglas 
firmly believes it belongs to the same group as the first. At all 
events there is here now a record of a crab which cast in the 
autumn of 1902, and which had not cast again up to May, 1906. 
The above returns give ample confirmation of the results 
previously arrived at, that the females which have recently passed 
through an ecdysis migrate northwards along the coast. No 
exception has yet been met with, unless the example (No. 373) 
captured at Montrose be considered to be such. The label only 
was returned to me, and Messrs. Johnston, on enquiry, wrote 
that the fisherman stated it was a male crab. There is really 
nothing to prevent the males also migrating in the same direction, 
but I think it will be admitted that something more than the 
opinion of the fisherman is necessary to establish the fact. 
I have to thank other investigators, merchants, etc., for many 
of the above records. 
